* CompleteMonster: As a HighFantasy series, there are villains that stand out over the rest:
** Vala the [[SnakesAreSinister Wereserpent]] is the [[AGodIAm self-proclaimed goddess]] of the cannibalistic Wyldermen, who [[ImAHumanitarian offer]] her human and Werecreature alike. Defeated by [[TheHero Drew]], she plotted her revenge against him and those he cares. First she [[DeadPersonImpersonation killed and impersonated]] the [[EvilOldFolks crone Baba Korga]], pretending to be an ally of Whitley and using her to enter Five Oaks unnoticed. During her [[FauxAffablyEvil 'friendly talk']] with Whitley she revealed her biggest atrocity, during the journey she [[EatsBabies devoured]] [[WouldHurtAChild innocent Romari children]] when no one was watching. She then explains her intentions of turning the Dyrewood into her realm, where she and the Wyldermen can kill and eat with impunity. She also mentioned her plan of using Whitley as bait to attract Drew, and in an act of [[CruelMercy "mercy"]], she promises to kill Whitley quickly after she had dispatched Drew. [[{{Pride}} Prideful]], [[EvilIsPetty petty]], and convinced that she had the right to kill and devour whenever she wanted, she saw humans as nothing but food and other Therianthropes as weaklings.
** Count Kesslar the Weregoat was exiled by his good-hearted cousin Baron Ewan for his crimes, including [[SlaveryIsASpecialKindOfEvil slavery]]. Returning several years later he imprisoned the people of Haggard with the intention of selling several of them into slavery. When his plans were frustrated by Drew, he killed the defenseless Lord Dorn out of spite. Capturing Drew some time after, he sold the young Werewolf to the wicked Lord Ignus to fight as a [[BreadAndCircuses gladiator]]. When Drew doesn't perform as expected, he [[BadBoss tosses]] his second-in-command Djogo to the arena, despite the pleads of Lady Shah, responding that no one is truly free under him. When Drew leads the slaves in rebellion, he [[DirtyCoward simply escapes]]. When the Werehawks successfully take back their home, he leaves his so-called friend [[TheQuisling Skeer]] to his fate. When cornered by Drew, he [[ISurrenderSuckers pretends to surrender]] and tries to strangle him when he lowers his guard. Cruel, ruthless and driven by {{Greed}}, he tried to bribe The Behemoth as a desperate final act, only for the Weremammoth to kill him in disgust.
** [[GreaterScopeVillain High Lord Oba]] is ThePatriarch of the Pantherlords and father of [[TheDreaded Onyx]] and [[FemmeFatale Opal]]. He's the one who [[ManipulativeBastard manipulated]] High Lords Leon and Tigara into exiling Tigara's granddaughter Taboo for killing her lover, (a crime Onyx committed), and tried to [[OffingTheOffspring kill Opal]] for divulging the truth. Ordering his son to kill his sister if they ever saw each other, when Onyx died in battle, he didn't even pretends to be sad, and convinces the Lionlords Luc and Lex into attacking the Wolf's army despite a previous [[LoopholeAbuse agreement]]. During the FinalBattle, he proclaimed his intensions of [[FantasticRacism enslaving all of Lyssia's humans]] as a way of 'reminding them their place' underneath the Catlords.
** [[TheEvilPrince Prince Lucas]] is Drew's [[CainAndAbel half-brother]] and everything Drew is not. Always a SpoiledBrat and an apprentice {{Necromancer}}, he began to [[SanitySlippage lose his sanity]] after he murdered Lord Broghan in front of his cousin, and former fiancee, Lady Gretchen under Opal's instructions. He goes downhill the moment he murders his [[{{Patricide}} father]] Leopold under the other Catlords' orders. His interest in BlackMagic leads him to work with the Wylderman Darkheart to create the [[AnimalisticAbomination Wyld]] [[SavageWolves Wolves]], who slaughter the Sturmlands' army, an act that [[EvenEvilHasStandards disgusts the other Werelords]]. He then murders Duke Henrik to "[[UnwantedRescue save]]" [[BloodKnight Lord Onyx]] after he [[HonorBeforeReason honorably accepted]] his defeat at his CombatByChampion. When he finds out that Gretchen's in the Dalelands he leads his Wyld Wolves in a [[RapePillageAndBurn bloody campaign]] to get her, killing several innocents in the process. He undoubtedly crosses the MoralEventHorizon by killing [[WouldHurtAChild Lord Milo]] in [[YouSaidYouWouldLetThemGo front]] of Trent, partially [[ImAHumanitarian eating]] him. When his grandfather Leon punishes him for killing his father and tries to get him to regain some honor, he murders his grandfather as well. When he arrives to Icegarden to kill Hector for [[YouKilledMyFather killing his mother]], [[SplitPersonalityTakeover Vincent]] retorts that he's only here settle a [[EvilIsPetty petty grudge]] towards Hector for always being smarter than him. Vicious and [[AxCrazy insane]], throughout the books he devolved from a simple RoyalBrat, to a cannibalistic SerialKiller.
* MoralEventHorizon: [[spoiler:Hector either crosses it when he tries to kill Vega, or when he changes his mind about sparing 9 year old Pick]].